Windows 10 HP Envy Black Screen only

[schreibert]

After the installation of the DisplayLink software on my HP Envy (Windows 10) everything was fine before I connected the Targus acp71eu docking station for the first time.

After the first time I connected I had a black screen only, both on the notebook and the external monitor. There where no possibilites to change anything.

When I disconnect the docking station I have the same, only black screen and the cursor symbol. The notebooks seem to run in the background, but there is no way no get something on the display.

I only can start the notebook in protected mode, but there I cannot change or install drivers.

Anybody out there with a solution or a hint? Thanks.